Rivermatics

USGS Streamgage 13305310

Lemhi River below L5 Diversion near Salmon, ID

Lemhi River below L5 Diversion near Salmon, ID is USGS streamgage 13305310 in Idaho, monitoring river discharge in hydrologic subbasin 17060204. It sits on the Lemhi River, alongside 2 other gauges Rivermatics tracks on the same river. It drains a watershed of about 1,216 square miles. Discharge records at this site go back to 1992. Typical flow runs near 125.1 cfs in July and 252.6 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
Idaho
Drainage area
1,216 sq mi
Subbasin (HUC-8)
17060204
Coordinates
45.13278, -113.79889
USGS site number
13305310
Records begin
1992-11-18 (34 years)

14-day flow forecast

Based on observations through for Lemhi River below L5 Diversion near Salmon, ID. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
23.4 25.3 26.7
22.8 24.9 26.5
22.5 24.9 26.5
22.7 25.2 26.8
22.5 25.1 27
22.4 25.2 27.6
22.6 25.4 27.8
22.5 25.3 27.4
22.2 25.1 27.5
22 25 27.4
21.9 24.9 27.5
21.9 25 27.9
21.8 25.1 29.5
21.6 25.1 31.5

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 32 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 183.7 239.9 317.2
February 192.4 250 328.1
March 193.6 286.9 419.5
April 55.7 252.6 415
May 44.6 254.7 628.1
June 124.7 483 1,426.7
July 24.3 125.1 644.9
August 14.5 26.4 139
September 20.4 35 142.1
October 65.1 215.5 348.7
November 215.5 293.4 394.7
December 188.9 249.6 323.1

All values in cubic feet per second (cfs).

Common questions

When does Lemhi River below L5 Diversion near Salmon, ID normally run highest?
June, on the long-term record. The median daily flow that month is about 483 cfs, against 26.4 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Lemhi River below L5 Diversion near Salmon, ID?
It depends on the month. In January, half of days historically fall near 239.9 cfs, with the middle 80% of days between 183.7 and 317.2 cfs. The month-by-month table on this page gives the full range.
How long has Lemhi River below L5 Diversion near Salmon, ID been measured?
Discharge records at USGS site 13305310 begin in 1992, about 34 years, covering roughly 9,197 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Lemhi River below L5 Diversion near Salmon, ID?
The gauge sits at 45.13278, -113.79889, in Idaho, in hydrologic subbasin 17060204, draining roughly 1,216 square miles.
Can I use Lemhi River below L5 Diversion near Salmon, ID data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Lemhi River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Lemhi River in full.

Other gauges in this subbasin